Charles Lasitter wrote:
> SoCalMike <mikein562athotmail@hotmail.com> wrote in
> news:K6qdncGk6OiO5MXfRVn-rw@comcast.com:
>
>>you shouldnt need to, unless youre going with a completely off the
>>wall wheel/tire combo.
>
>>as it stands now ,your speedo might read up to 10% higher than you
>>actually drive. bigger wheels/tires will lower that ratio to
>>something more acceptable.
>
> With some auto makers (BMW), that's 10% PLUS 2.4 mph. It means that
> you could be doing 50 with the speedometer reading 57.4 mph, and BMW
> would decline to fix it because it was "within spec".
>

> Now it may turn out that nothing can be adjusted, but I still plan to
> get the speedometer checked because I'd like to know my actual speed
> even if I can't change it.
>
> -- CL.

That has always been a minor source of irritation for me. In my SOL
VTEC, if the speed limit is 45, I need to drive what appears to be 55 on
my speedo, which is about 5 over the limit plus 5 for the speedo error,
and I've driven right through numerous radar traps like this without
being stopped.

I gave some thought to buying something like one of the below items, but
the $ was always needed elsewhere, and I actually know nothing about how
well either of these works.

http://www.ricks2k.com/products/yellowbox.php

http://www.ntwonline.com/acb/showdet...=1973&CATID=15

When this speedo error is really a problem is when I get in my wife's
Mazda which has a speedo that is a lot closer to right. If I drive *it*
10 over the limit, I'll end up with a ticket. Just have to remember
which car I'm driving.

--

George

http://people.delphiforums.com/gmcc